CN2281590Y - Lightning arresting FM/TV signal socket - Google Patents
Lightning arresting FM/TV signal socket Download PDFInfo
- Publication number
- CN2281590Y CN2281590Y CN 96230673 CN96230673U CN2281590Y CN 2281590 Y CN2281590 Y CN 2281590Y CN 96230673 CN96230673 CN 96230673 CN 96230673 U CN96230673 U CN 96230673U CN 2281590 Y CN2281590 Y CN 2281590Y
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- CN
- China
- Prior art keywords
- signal
- floatingly
- input
- output
- impedance transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
- Details Of Aerials (AREA)
- Details Of Television Systems (AREA)
Abstract
The utility model relates to a lightning prevention FM/TV signal socket. A panel of a casing of the lightning arresting FM/TV signal socket is provided with an FM signal coaxial output jack and a TV signal coaxial output jack; an inner side of the panel of the casing of the lightning arresting FM/TV signal socket is provided with a circuit board of an FM/TV signal input-output impedance converter; a corresponding end of an external connection feed line are respectively connected with the input terminal, a floating ground terminal and AC ground terminal of the impedance converter; an FM signal output terminal, a TV signal output terminal and the floating ground terminal are respectively connected with the FM signal coaxial output jack. Because a solid-state discharge tube is arranged between the input terminal and the floating ground terminal of the impedance converter, the utility model has the function of lightning prevention.
Description
The utility model relates to the architecture advances of a kind of frequency modulation/TV (FM/TV) signal plug, specifically, is a kind of frequency modulation/TV signal socket with lightning protection properties.
As everyone knows, antenna and feed line impedance thereof must could guarantee the quality of reception with the input impedance matching of television set, and frequency modulation/TV signal socket is exactly the impedance-matching device that connects them.But commercially available frequency modulation/TV signal socket does not all have lightning protection function at present.Therefore, make the television set or the frequency modulation radio-cassette player of this frequency modulation of adapted/TV signal socket be subject to thunderbolt.Especially particularly serious in this danger of area with more lightning activities, television set, radio-cassette player are damaged because of thunderbolt, also enter the room sometimes because of drawing thunder, cause other lightning strike accident.
The purpose of this utility model provides a kind of lightning protection frequency modulation/TV signal socket.
Technical solution of the present utility model is with hold floatingly a solid-state discharge tube to be set at the feeder incoming end of frequency modulation/TV signal socket.Like this, under normal circumstances, therefore this solid-state discharge tube both end voltage, does not influence TV or frequency modulation signal from antenna, via entering television set or frequency modulation radio-cassette player behind the impedance transformer less than its discharge threshold.But in case there is lightning strike signals to pass on a skill of craft to others, then surpasses the discharge threshold quilt discharge amplitude limit of this solid-state discharge tube because of the magnitude of voltage of lightning strike signals, and disappear when being struck by lightning, solid-state discharge tube still returns to normal.
As mentioned above, the utility model lightning protection frequency modulation/TV signal socket, comprise shell, coaxial output plughole of FM signal and the coaxial delivery outlet of TV signal are arranged on the panel of this shell, its panel installed inside frequency modulated television signal input and output impedance transformer circuit board, the frequency modulated output signal end of this impedance transformer and the coaxial output plughole of floating ground termination FM signal, its TV signal output end and the coaxial output plughole of floating ground termination TV signal, its external feeder line connects the input of impedance transformer respectively, hold and end floatingly with exchanging, be characterized in connecing a solid-state discharge tube between the input of this impedance transformer and floating the end.
The utility model has the advantages that: 1. simple in structure, easy for installation, particularly need not to consider the lightning protection components and parts that use, be the polarity of solid-state discharge tube, also need not to consider to connect thereafter the internal structure of frequency modulation/TV signal socket, as long as solid-state discharge tube is installed in the feeder line input of external antenna and holding of impedance transformer floatingly; 2. maintenance or very convenient to the repacking of existing procucts; 3. safe in utilization, because that the thunderbolt high-voltage signal is discharged is spacing, and solid-state discharge tube has reusable characteristic, therefore, and not only convenient but also safety in the use.
Accompanying drawing of the present utility model is simply described as follows:
Fig. 1 is a case panel structure schematic diagram of the present utility model.
Fig. 2 is a case panel inside structure schematic diagram of the present utility model.
Fig. 3 is an electrical schematic diagram of the present utility model.
Below we according to Fig. 1.Fig. 2 and Fig. 3 provide better embodiment of the utility model.And in conjunction with further providing ins and outs of the present utility model to the description of this embodiment.
See also Fig. 1, as shown in the figure, the panel 10 of shell 1 of the present utility model is provided with coaxial output plughole 11 of FM signal and the coaxial output plughole 12 of TV signal, and is provided with installing hole 13,14.
See also Fig. 2, as seen from the figure, install the circuit board 16 of frequency modulation/TV signal input and output impedance transformer 2 on the panel of the present utility model inboard 15, and external feeder line 3 is arranged.
See also Fig. 3, as shown in the figure, the FM signal output 21 of this impedance transformer 2 with hold 20 to connect the coaxial delivery outlet 11 of this FM signal respectively floatingly, and TV signal output end 22 with hold 20 to connect the coaxial delivery outlet 12 of this TV signal respectively floatingly, external again feeder line 3 connects the input 23 of this impedance transformer 2 respectively, hold floatingly 20 with exchanging the end 24.At the input 23 of this impedance transformer 2 with floating connect a solid-state discharge tube 4 between holding 20, like this, when the thunderbolt high pressure is introduced by external feeder line 3, just, guaranteed safety by these solid-state discharge tube 4 discharge amplitude limits.Impedance transformer 2 in the present embodiment comprises input coupling capacitance 25, impedor 26.Primary coil 261 1 ends of this impedor 26 connect input 23 through input coupling capacitance 25, and another termination holds 20 floatingly, hold floatingly 20 with hold 24 indirect electric capacity 29 with exchanging; And level coil 263 1 terminations of impedor 26 hold 20 floatingly, another termination FM signal output 21; One termination TV signal output end 22 of its another secondary coil 262, the other end be through parallel resistor 27, electric capacity 28 backs with hold 20 to join floatingly.
Claims (2)
1. lightning protection frequency modulation/TV signal socket, comprise shell (1), coaxial output plughole of FM signal (11) and the coaxial delivery outlet of TV signal (12) are arranged on the panel (10) of this shell (1), the circuit board (16) of frequency modulation/TV signal input and output impedance transformer (2) is installed in its panel inboard (15), the frequency modulated output signal end (21) of this impedance transformer (2) connects this coaxial output plughole (11) with hold (20) floatingly, its TV signal output end (21) connects this coaxial output plughole (12) with hold (20) floatingly, its place connects the input (23) that feeder line (3) connects impedance transformer (2) respectively, hold (20) floatingly and exchange ground end (24), it is characterized in that the input (23) of this impedance transformer (2) and floating the end connect a solid-state discharge tube (4) between (20).
2. lightning protection frequency modulation according to claim 1/TV signal socket, it is characterized in that frequency modulation/TV signal impedance transformer (2) comprises input coupling capacitance (25), impedor (26), primary coil (261) one ends of this impedor (26) connect input (23) through input coupling capacitance (25), another termination is held (20) floatingly, holds (20) floatingly and holds (24) electric capacity (29) indirectly with exchanging; And a level coil (263) one terminations of impedor (26) are held (20) floatingly, another termination FM signal output (21); The one termination TV signal output end (22) of its another secondary coil (262), the other end are through parallel resistor (27), and electric capacity (28) is back and hold (20) to join floatingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230673 CN2281590Y (en) | 1996-09-11 | 1996-09-11 | Lightning arresting FM/TV signal socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230673 CN2281590Y (en) | 1996-09-11 | 1996-09-11 | Lightning arresting FM/TV signal socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281590Y true CN2281590Y (en) | 1998-05-13 |
Family
ID=33908049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96230673 Expired - Fee Related CN2281590Y (en) | 1996-09-11 | 1996-09-11 | Lightning arresting FM/TV signal socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281590Y (en) |
-
1996
- 1996-09-11 CN CN 96230673 patent/CN2281590Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |